{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Disease", "Chemical"], "input": "At the time of admission , the patient was at high risk of radiation injury to the fetus , so a coronary angiogram was postponed until the second trimester ."}
{"Disease": ["radiation injury"], "Chemical": []}